The ancient heritage of water ice in the solar system

Author:

Cleeves L. Ilsedore1,Bergin Edwin A.1,Alexander Conel M. O’D.2,Du Fujun1,Graninger Dawn3,Öberg Karin I.3,Harries Tim J.4

Affiliation:

1. Department of Astronomy, University of Michigan, 311 West Hall, 1085 South University Avenue, Ann Arbor, MI 48109, USA.

2. Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC 20015, USA.

3. Harvard-Smithsonian Center for Astrophysics, Harvard University, Cambridge, MA 02138, USA.

4. Department of Physics and Astronomy, University of Exeter, Stocker Road, Exeter EX4 4QL, UK.

Abstract

Nature or nurture for solar system ices? We know that life's favorite molecule, water, exists throughout the solar system. What we don't know is whether present water levels reflect the chemical conditions of our parent nebula or whether they result from later reprocessing in the young system. The levels of deuterium and hydrogen in solar system water ice offer a tracer for chemical history, and Cleeves et al. model the processes at play. The analysis suggests that all nascent planetary systems may have the same water resources that we did. Science , this issue p. 1590

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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